1) Unzip Downloaded File
bzip2 -d firefox.................bz2
2) expand it by tar command
tar xvf fire.....................tar
3) go to Created Directory By Tar
cd fire.....
4) execute The Following command
./configure
5) No Errors.... OK, Run The Following Command
make
6) No Errors.....OK Run The Following Command
make install
7) Probably No Errors Then Enter firefox